CN204130695U - The miniaturized light and thin type double polarization array antenna of a kind of ultra broadband - Google Patents
The miniaturized light and thin type double polarization array antenna of a kind of ultra broadband Download PDFInfo
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- CN204130695U CN204130695U CN201420640390.4U CN201420640390U CN204130695U CN 204130695 U CN204130695 U CN 204130695U CN 201420640390 U CN201420640390 U CN 201420640390U CN 204130695 U CN204130695 U CN 204130695U
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Abstract
The utility model discloses the miniaturized light and thin type double polarization array antenna of a kind of ultra broadband, comprising: the multiple radiation fins, substrate and the reflecting plate that set gradually; The front of substrate is relative with radiation fin, and the front of substrate is provided with excitation gap; The back side of substrate is relative with reflecting plate, and the back side of substrate is provided with the first power splitter and two-way first transmission line, the second power splitter and two-way second transmission line; First transmission line and the second transmission line are respectively the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal; Two-way first transmission line is connected with two outputs of the first power splitter respectively, and two-way second transmission line is connected with two outputs of the second power splitter respectively; Two-way first transmission line and two-way second transmission line are connected with the metal covering in substrate front with excitation gap orthorhombic phase intersecting and merging respectively.The miniaturized light and thin type double polarization array antenna of this ultra broadband by arrange vary in size, the multilayer radiation fin of corresponding different frequency range, reach the effect of extending bandwidth.
Description
Technical field
The utility model relates to the antenna technical field in moving communicating field, particularly, relates to the miniaturized light and thin type double polarization array antenna of a kind of ultra broadband.
Background technology
Specify according to International Radio Regulation, existing radio communication is divided into into air communications, marine communication, land communication, satellite communication, broadcast, TV, radionavigation, the business that the kinds more than 50 such as location and remote measurement, remote control, space exploration are different, and certain frequency range is all defined to often kind of business.
In mobile communication business, the communication frequency band of all mobile phones is different, GSM900 uses 890-960MHz, GSM1800 uses 1710-1850MHz, CDMA uses 825-880MHz, the groundwork frequency range of 3G is then at 1880-2025MHz, and the 4G frequency range of Ministry of Industry and Information's approval is before this high bands such as 2575-2635MHz.
Current 2G, 3G, 4G communication network coexist, no matter be base station or indoor distributed system, each communication system has respective antenna, and the bandwidth of existing antenna is narrower, when meeting 2G, 3G, 4G beamwidth of antenna, needs adopt the antenna of multiple different bandwidth, and cost of building a station is high.
Utility model content
The utility model is to overcome the narrower defect of dual polarized antenna bandwidth in prior art, according to an aspect of the present utility model, proposes the miniaturized light and thin type double polarization array antenna of a kind of ultra broadband.
The miniaturized light and thin type double polarization array antenna of a kind of ultra broadband that the utility model embodiment provides, comprising: the multiple radiation fins, substrate and the reflecting plate that set gradually; The front of substrate is relative with radiation fin, and the front of substrate is provided with excitation gap; The back side of substrate is relative with reflecting plate, and the back side of substrate is provided with the first power splitter and two-way first transmission line, the second power splitter and two-way second transmission line; First transmission line and the second transmission line are respectively the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal; Two-way first transmission line is connected with two outputs of the first power splitter respectively, and two-way second transmission line is connected with two outputs of the second power splitter respectively; Two-way first transmission line and two-way second transmission line are connected with the metal covering in substrate front with excitation gap orthorhombic phase intersecting and merging respectively, and four orthogonal points of transmission line and excitation gap orthogonal intersection are symmetrical; Multiple radiation fin is the circular radiation sheet of setting parallel to each other, and radiation fin distance substrate is far away, and the diameter of radiation fin is less.
In technique scheme, excitation gap is symmetrical grading profile, comprising: cross shape grading profile, rhombus cross grading profile, I-shaped grading profile; The narrowest at the width in excitation gap, short circuit feedback point place, the width the closer to middle position excitation gap, excitation gap is wider, and short circuit feedback point is transmission line and the orthogonal points of excitation gap orthogonal intersection.
In technique scheme, substrate back is provided with and the cross gap encouraging seam shape identical in the mapping position in the excitation gap in substrate front, and cross gap is connected with each line branches; Be provided with at the middle position of cross gap and form capacity coupled circular metal face with encouraging gap, the surrounding in circular metal face surround by cross gap.
In technique scheme, also comprise: phase shift 90 degree of constant power distributors; First power splitter is connected with two inputs of phase shift 90 degree of constant power distributors respectively with the input of the second power splitter.
In technique scheme, substrate is provided with multiple via hole, and via hole is along transmission line edge and/or the distribution of excitation edge, gap; The metal covering in substrate front is connected by via hole with the metal covering of substrate back.
In technique scheme, also comprise: dielectric layer; Dielectric layer is arranged between radiation fin and the front of substrate, and is arranged between multilayer radiation fin, and the dielectric constant of dielectric layer is greater than the dielectric constant of air.
In technique scheme, substrate adopts high dielectric constant substrate, and the span of the dielectric constant of dielectric layer and high dielectric constant substrate is respectively:
1≤M≤10；3.5≤N≤10；
Wherein, M is the dielectric constant of dielectric layer, and N is the dielectric constant of high dielectric constant substrate.
In technique scheme, radiation fin is cambered surface radiation fin, and the cambered surface surface of cambered surface radiation fin is in bowl-shape setting.
In technique scheme, the bowl-shape bottom shape of cambered surface radiation fin comprises disc and plane, and the cambered surface of cambered surface radiation fin is opening up or down.
In technique scheme, radiation fin is cambered surface radiation fin, and the cambered surface surface of cambered surface radiation fin is in bowl-shape setting; The bowl-shape bottom shape of cambered surface radiation fin comprises disc and plane, and the cambered surface of cambered surface radiation fin is opening up or down.
The miniaturized light and thin type double polarization array antenna of the ultra broadband that the utility model embodiment provides, the two-way signal transmission of 90 degree is differed by the first transmission line and the second transmission line difference transmission polarization, by decile two power splitter, every road signal is divided into two-way tributary signal, this four transmission lines branch road encourages cross star to encourage gap simultaneously, form four feeds, the excitation of electromagnetic wave multilayer radiation fin produced, the standing wave type electromagnetic field of multiple different frequency is formed in multi-thin-layer space, and by these radiation fins of reflecting plate secondary excitation, electromagnetic wave is made to define repeatedly resonance in the different frequency range that the multilayer radiation fin varied in size is corresponding, thus reach the effect of extending bandwidth.By adding phase shift 90 degree of constant power distributors, make the crossed linear polarization ripple exported form crossed-circle polarized wave in space, adopt multilayer arc radiation fin simultaneously, reduce the interference in crossed-circle polarized wave near field, make crossed-circle polarize circularity better, isolation is higher.Simultaneously, by improving the dielectric constant of substrate, and the air layer between radiation fin and substrate and the air layer between multilayer radiation fin are changed over dielectric layer, improve the dielectric constant of dielectric layer, reduce the volume of UWB (Ultra Wideband) Antenna, can the beamwidth of control antenna, achieve the antenna that ultra broadband microminiature can control beamwidth.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the utility model.The purpose of this utility model and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, does not form restriction of the present utility model with embodiment one of the present utility model.In the accompanying drawings:
Fig. 1 is the first structure chart of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Fig. 2 is the structure chart of substrate back in the utility model embodiment;
Fig. 3 is the structure chart in substrate front in the utility model embodiment;
Fig. 4 is the first three-dimensional structure diagram of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Fig. 5 is the detailed structure view at substrate short circuit feedback point place in the utility model embodiment;
Fig. 6 is the detailed structure view of substrate back in the utility model embodiment;
Fig. 7 is the standing wave pattern of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Fig. 8 is the gain diagram of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Fig. 9 is the second structure chart of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Figure 10 is the second three-dimensional structure diagram of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Figure 11 is the 3rd structure chart of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment;
Figure 12 is the 3rd three-dimensional structure diagram of the miniaturized light and thin type double polarization array antenna of ultra broadband in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but is to be understood that protection range of the present utility model not by the restriction of embodiment.
According to the utility model embodiment, provide the miniaturized light and thin type double polarization array antenna of a kind of ultra broadband, the structure chart of the miniaturized light and thin type double polarization array antenna of ultra broadband that Fig. 1 provides for the utility model embodiment, Fig. 2 and Fig. 3 is respectively the structure figure of substrate and Facad structure figure, Fig. 4 are the three-dimensional structure diagram of this dual polarized antenna.Concrete, the miniaturized light and thin type double polarization array antenna of this ultra broadband is disposed with multiple radiation fin 20, substrate 10 and reflecting plate 30.Wherein, radiation fin 20 can be fixed on substrate 10 by radiation fin support, it will be understood by those skilled in the art that radiation fin 20 also can be fixed by other means, adopts radiation fin support to be only wherein a kind of embodiment.
Wherein, the front of substrate 10 is relative with radiation fin 20, and the front of substrate 10 is provided with excitation gap 101; The back side of substrate 10 is relative with reflecting plate 30, and the back side of substrate 10 is provided with the first power splitter 110 and two-way first transmission line 111, second power splitter 120 and two-way second transmission line 121; First transmission line 111 and the second transmission line 121 are respectively the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal; Two-way first transmission line 111 is connected with two outputs of the first power splitter 110 respectively, and two-way second transmission line 121 is connected with two outputs of the second power splitter 120 respectively.Concrete, the first power splitter 110 and the second power splitter 120 are decile two power splitter.
Two-way first transmission line 111 and two-way second transmission line 121 are connected with the metal covering in substrate 10 front with excitation gap 101 orthorhombic phase intersecting and merging respectively, and four orthogonal points of transmission line and excitation gap 101 orthogonal intersection are symmetrical.Multiple radiation fins 20 are the circular radiation sheet of setting parallel to each other, and radiation fin distance substrate is far away, and the diameter of radiation fin is less, specifically as shown in Figure 1.
Wherein, excitation gap 101 is symmetrical grading profile, includes but not limited to: cross shape grading profile, rhombus cross grading profile, I-shaped grading profile.Concrete, as shown in Figures 2 and 3, the narrowest at the width in excitation gap, short circuit feedback point place, the width the closer to middle position excitation gap, excitation gap is wider, and short circuit feedback point is transmission line and the orthogonal points of excitation gap orthogonal intersection.The detailed structure view at short circuit feedback point place is shown in Figure 5.
In fig. 2, substrate back is provided with the cross gap 102 identical with encouraging gap 101 shape in the mapping position in the excitation gap 101 in substrate front, and cross gap 102 is connected with each line branches.In the dual polarized antenna that the utility model embodiment provides, be also provided with at the middle position of cross gap and form capacity coupled circular metal face 130 with encouraging gap, the surrounding in circular metal face 130 surround by cross gap.This circular metal face 130 is not communicated with the back metal face of above-mentioned substrate 10.The length in excitation gap 102 can be reduced in circular metal face 130, is conducive to the miniaturization realizing antenna.
Preferably, substrate 10 is provided with multiple via hole 140, and via hole 140 is along transmission line edge and/or the distribution of excitation edge, gap, and the distribution shape of via hole is see shown in Fig. 2 and Fig. 3.The metal covering in substrate front is connected by via hole with the metal covering of substrate back.
Concrete, more than one of the quantity of via hole.In substrate front, as shown in Figure 3, go out to encourage outside gap 101, other region large area in substrate front cover copper, this substrate front cover the metal covering that copper region is substrate front, the metal in this front is just also metal ground plane.In like manner, in substrate back, except cross gap 102, power splitter (comprising the first power splitter 110 and the second power splitter 120), transmission line (comprising the first transmission line 111 and the second transmission line 121), other region large area of substrate back cover copper, this substrate back cover the metal covering that copper region is substrate back.
The metal covering in substrate front is connected by via hole with the metal covering of substrate back, makes the two become common ground, thus decreases plane wave that transmission line produces in the interference of elect magnetic field, makes antenna performance more stable.Two-way first transmission line 111 is connected by the metal covering of via hole 140 with substrate 10 front with two-way second transmission line 121, by end (output) ground connection of transmission line, i.e. short circuit, decrease transmission line and excitation gap 102 phase feed four present a little between be coupled.
Preferably, shown in Figure 6, the miniaturized light and thin type double polarization array antenna of this ultra broadband also comprises: phase shift 90 degree of constant power distributors 150.Wherein, the first power splitter 110 is connected with two inputs of phase shift 90 degree of constant power distributors 150 respectively with the input of the second power splitter 120.The output of phase shift 90 degree of constant power distributors is transmitting terminal or the receiving terminal of this dual polarized antenna, can outside output cross circular polarized antenna signal.
By adding phase shift 90 degree of constant power distributors 150, the crossed linear polarization ripple exported is made to form crossed-circle polarized wave in space.The near field crossed-circle polarized wave that this dual polarized antenna is launched, by the loss of space length and polarization, makes antenna obtain corresponding antenna port isolation.
Simultaneously, crossed-circle poliarizing antenna is adopted to replace crossed linear polarization antenna, because base station and terminal are crossed linear polarization antennas, when two orthogonal linear polarized antennas receive a crossed-circle polarized wave, its polarization match factor is 1, namely reaches optimal polarization matching status, and received signal power and dual-mode antenna position have nothing to do, do not depend on the direction of antenna, the energy of the circularly polarised wave that two crossed linear polarization antennas of receiving terminal receive is equal all the time.Same, be also like this when crossed-circle poliarizing antenna receives crossed linear polarization ripple.Crossed-circle poliarizing antenna replaces crossed linear polarization antenna, and not only receiving ability is better than linear polarized antenna, and makes antenna become a joint from two joints, improves channel utilization index, reduces volume, provide cost savings.
Test the miniaturized light and thin type double polarization array antenna of ultra broadband that the utility model embodiment provides, this antenna can normally be operated in 1.71GHz-2.69GHz ultra wide band range, and its standing wave pattern and gain diagram are respectively see shown in Fig. 7 and Fig. 8.
In the figure 7, curve 1 is isolation curve, by the visible antenna of curve 1 from the isolation of 1.71GHz-2.69GHz at below-30dB, curve 2 and curve 3 are standing-wave ratio curve, by curve 2 and 3 this antenna visible from the standing-wave ratio of 1.71GHz-2.69GHz all below 1.5.In fig. 8, curve 4 is gain curve, and curve 5 is beamwidth curve.As seen from the figure, in element antenna:
1710MHz-1850MHz gain is greatly about 6.7dB ~ 7.2dB, and beamwidth is at 77 ° ~ 75 °;
1880MHz-2170MHz gain is greatly about 7.3dB ~ 7.8dB, and beamwidth is at 74 ° ~ 69 °;
2500MHz-2690MHz gain is greatly about 8.5dB ~ 9.2dB, and beamwidth is at 65 ° ~ 62 °.
Preferably, shown in Figure 9, the miniaturized light and thin type double polarization array antenna of the ultra broadband that the utility model embodiment provides also comprises: dielectric layer 40.Dielectric layer 40 is arranged between the front of radiation fin 20 and substrate 10, and is arranged between multilayer radiation fin, and the dielectric constant of dielectric layer 40 is greater than the dielectric constant of air.Wherein, substrate also can adopt high dielectric constant substrate.The three-dimensional structure diagram increasing the miniaturized light and thin type double polarization array antenna of the ultra broadband after dielectric layer is shown in Figure 10.
Below for LTE antenna, adopt the substrate of differing dielectric constant and dielectric layer, test result when 2555-2635 frequency range as shown in table 1 below:
Table 1
Can be drawn by table 1.The dielectric constant of antenna substrate is generally from 3.5 ~ 10, and when the dielectric constant of dielectric layer reaches about 10, antenna is cisco unity malfunction.Therefore, the span of the dielectric constant of dielectric layer and high dielectric constant substrate is respectively:
1≤M≤10；3.5≤N≤10；
Wherein, M is the dielectric constant of dielectric layer, and N is the dielectric constant of high dielectric constant substrate.Accordingly, antenna beamwidth approximately can be controlled between 60 ° to 110 °.
The miniaturized light and thin type double polarization array antenna of the ultra broadband that the utility model embodiment provides, by increasing dielectric layer and improving the dielectric constant of substrate, the frequency signal wavelength encouraging out is in the substrate shortened, like this in order to reach resonance radiation, microflute gap just needs to shorten accordingly, thus can substantially reduce the size of antenna substrate.In addition, the signal gone out when aerial radiation passes through the dielectric layer with more high-k, reduces the wavelength of signal, to the size also corresponding reduction of the radiation fin of its generation resonance; Meanwhile, because the dielectric constant of dielectric layer uprises, its loss strains greatly mutually, the signal gone out when aerial radiation passes through the dielectric layer with more high-k, the radiation efficiency of antenna just can reduce, and namely antenna gain reduces, thus the beamwidth of antenna is broadened.So, the dielectric constant of dielectric layer is higher, beamwidth is wider, and namely the miniaturized light and thin type double polarization array antenna of the ultra broadband that provides of the utility model embodiment is by changing the material (namely changing the dielectric constant of dielectric layer) of dielectric layer, can the beamwidth of control antenna.
Preferably, shown in Figure 11 and Figure 12, in the utility model embodiment, radiation fin 20 is cambered surface radiation fin, and the cambered surface surface of cambered surface radiation fin is in bowl-shape setting.Wherein, the bowl-shape bottom shape of cambered surface radiation fin comprises disc and plane, and the cambered surface of cambered surface radiation fin is opening up or down.
The miniaturized light and thin type double polarization array antenna of the ultra broadband that the utility model embodiment provides is near field.The electromagnetic wave utilizing cambered surface radiation fin to make antenna to be formed near field, when arriving reception antenna 4, carries out offseting of energy with the electromagnetic wave of reception antenna 4, namely improves the isolation of reception-transmitting antenna.By regulating the radian size of cambered surface radiation fin, the cambered surface opening controlling distance and the cambered surface radiation fin up and down of substrate 10 can face upward or downward, finding the energy reaching reception antenna and transmitting antenna offsets a little, and energy offsets more, can obtain higher isolation.
The miniaturized light and thin type double polarization array antenna of the ultra broadband that the utility model embodiment provides, the two-way signal transmission of 90 degree is differed by the first transmission line and the second transmission line difference transmission polarization, by decile two power splitter, every road signal is divided into two-way tributary signal, this four transmission lines branch road encourages cross star to encourage gap simultaneously, form four feeds, the excitation of electromagnetic wave multilayer radiation fin produced, the standing wave type electromagnetic field of multiple different frequency is formed in multi-thin-layer space, and by these radiation fins of reflecting plate secondary excitation, electromagnetic wave is made to define repeatedly resonance in the different frequency range that the multilayer radiation fin varied in size is corresponding, thus reach the effect of extending bandwidth.By adding phase shift 90 degree of constant power distributors, make the crossed linear polarization ripple exported form crossed-circle polarized wave in space, adopt multilayer arc radiation fin simultaneously, reduce the interference in crossed-circle polarized wave near field, make crossed-circle polarize circularity better, isolation is higher.Simultaneously, by improving the dielectric constant of substrate, and the air layer between radiation fin and substrate and the air layer between multilayer radiation fin are changed over dielectric layer, improve the dielectric constant of dielectric layer, reduce the volume of UWB (Ultra Wideband) Antenna, can the beamwidth of control antenna, achieve the antenna that ultra broadband microminiature can control beamwidth.
The utility model can have multiple multi-form embodiment; above for Fig. 1-Figure 12 by reference to the accompanying drawings to the technical solution of the utility model explanation for example; this does not also mean that the instantiation that the utility model is applied can only be confined in specific flow process or example structure; those of ordinary skill in the art should understand; specific embodiments provided above is some examples in multiple its preferred usage, and the execution mode of any embodiment the utility model claim all should within technical solutions of the utility model scope required for protection.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. the miniaturized light and thin type double polarization array antenna of ultra broadband, is characterized in that, comprising: the multiple radiation fins, substrate and the reflecting plate that set gradually;
The front of described substrate is relative with described radiation fin, and the front of described substrate is provided with excitation gap; The back side of described substrate is relative with described reflecting plate, and the back side of described substrate is provided with the first power splitter and two-way first transmission line, the second power splitter and two-way second transmission line; Described first transmission line and described second transmission line are respectively the transmission line of the crossed linear polarization antenna of two-way polarization orthogonal; First transmission line described in two-way is connected with two outputs of described first power splitter respectively, and the second transmission line described in two-way is connected with two outputs of described second power splitter respectively;
First transmission line described in two-way and the second transmission line described in two-way are connected with the metal covering in described substrate front with described excitation gap orthorhombic phase intersecting and merging respectively, and four orthogonal points of transmission line and described excitation gap orthogonal intersection are symmetrical;
Multiple radiation fin is the circular radiation sheet of setting parallel to each other, and radiation fin is far away apart from described substrate, and the diameter of radiation fin is less.
2. double polarization array antenna according to claim 1, is characterized in that, described excitation gap is symmetrical grading profile, comprising: cross shape grading profile, rhombus cross grading profile, I-shaped grading profile;
The width presenting described excitation gap, some place in short circuit is the narrowest, described in the middle position of described excitation gap, encourage the width in gap wider, and described short circuit feedback point is the orthogonal points of transmission line and described excitation gap orthogonal intersection.
3. double polarization array antenna according to claim 1, it is characterized in that, described substrate back is provided with the cross gap identical with described excitation seam shape in the mapping position in the excitation gap in described substrate front, and described cross gap is connected with each line branches;
Be provided with at the middle position of described cross gap and form capacity coupled circular metal face with described excitation gap, the surrounding in described circular metal face surround by described cross gap.
4. double polarization array antenna according to claim 1, is characterized in that, also comprises: phase shift 90 degree of constant power distributors;
Described first power splitter is connected with two inputs of described phase shift 90 degree of constant power distributors respectively with the input of described second power splitter.
5. double polarization array antenna according to claim 1, is characterized in that, described substrate is provided with multiple via hole, and described via hole is along transmission line edge and/or the distribution of edge, described excitation gap; The metal covering in described substrate front is connected by described via hole with the metal covering of described substrate back.
6., according to the arbitrary described double polarization array antenna of claim 1-5, it is characterized in that, also comprise: dielectric layer;
Described dielectric layer is arranged between the front of described radiation fin and described substrate, and is arranged between multilayer radiation fin, and the dielectric constant of described dielectric layer is greater than the dielectric constant of air.
7. double polarization array antenna according to claim 6, is characterized in that, described substrate adopts high dielectric constant substrate, and the span of the dielectric constant of described dielectric layer and described high dielectric constant substrate is respectively:
1≤M≤10；3.5≤N≤10；
Wherein, M is the dielectric constant of dielectric layer, and N is the dielectric constant of high dielectric constant substrate.
8. according to the arbitrary described double polarization array antenna of claim 1-5, it is characterized in that, described radiation fin is cambered surface radiation fin, and the cambered surface surface of described cambered surface radiation fin is in bowl-shape setting.
9. double polarization array antenna according to claim 8, is characterized in that, the bowl-shape bottom shape of described cambered surface radiation fin comprises disc and plane, and the cambered surface of described cambered surface radiation fin is opening up or down.
10. double polarization array antenna according to claim 6, is characterized in that, described radiation fin is cambered surface radiation fin, and the cambered surface surface of described cambered surface radiation fin is in bowl-shape setting;
The bowl-shape bottom shape of described cambered surface radiation fin comprises disc and plane, and the cambered surface of described cambered surface radiation fin is opening up or down.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016066016A1 (en) * | 2014-10-30 | 2016-05-06 | 庄昆杰 | Ultra-wideband miniaturized crossed circularly-polarized antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016066016A1 (en) * | 2014-10-30 | 2016-05-06 | 庄昆杰 | Ultra-wideband miniaturized crossed circularly-polarized antenna |
| US10186777B2 (en) | 2014-10-30 | 2019-01-22 | Kunjie Zhuang | Ultra-wideband miniaturized crossed circularly-polarized antenna |
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